"What Our Gearhead® Experts Are Saying: ""This jacket feels like a secret weapon in the mountains—light, warm, and breathable. The PrimaLoft Gold Active+ insulation is amazing for staying comfortable when I’m moving, and the stretch panels give it a natural, flexible feel. It layers perfectly under a shell but still works as a standalone when the weather’s mild."" We reach for the Helly Hansen Odin LT Stretch Ins Hood 2. 0 Jacket on long days in the mountains when weight, warmth, and freedom of movement matter most. Built with recycled nylon ripstop, it stands up to rugged terrain while stretch fleece panels under the arms deliver mobility for skintracks, climbs, and quick transitions. PrimaLoft® Gold Active+ insulation sets the bar for synthetic warmth—lightweight, quick-drying, and breathable—keeping us comfortable from bootpacks to ridge traverses. Elastic cuffs and hem seal in heat, while articulated elbows and raglan sleeves ensure mobility never feels restricted. Finished with a flat-brim hood, secure hand pockets, and a chin guard for added comfort, this versatile insulator shines both as a midlayer under a storm shell or on its own in milder conditions. With bluesign®-approved, recycled materials and PFC-free water resistance, it brings top-tier performance with a lighter environmental footprint."